Trace number 1522284

Some explanations

A solver is run under the control of another program named runsolver. runsolver is in charge of imposing the CPU time limit and the memory limit to the solver. It also monitors some information about the process. The trace of the execution of a solver is divided into four (or five) parts:
  1. SOLVER DATA
    This is the output of the solver (stdout and stderr).
    Note that some very long lines in this section may be truncated by your web browser ! In such a case, you may want to use the "Download as text" link to get the trace as a text file.

    When the --timestamp option is passed to the runsolver program, each line output by the solver is prepended with a timestamp which indicates at what time the line was output by the solver. Times are relative to the start of the program, given in seconds. The first timestamp (if present) is estimated CPU time. The last timestamp is wall clock time.

    As some 'v lines' may be very long (sometimes several megabytes), the 'v line' output by your solver may be split on several lines to help limit the size of the trace recorded in the database. In any case, the exact output of your solver is preserved in a trace file.
  2. VERIFIER DATA
    The output of the solver is piped to a verifier program which will search a value line "v " and, if found, will check that the given interpretation satisfies all constraints.
  3. CONVERSION SCRIPT DATA (Optionnal)
    When a conversion script is used, this section shows the messages that were output by the conversion script.
  4. WATCHER DATA
    This is the informations gathered by the runsolver program. It first prints the different limits. There's a first limit on CPU time set to X seconds (see the parameters in the trace). After this time has ellapsed, runsolver sends a SIGTERM and 2 seconds later a SIGKILL to the solver. For safety, there's also another limit set to X+30 seconds which will send a SIGXPU to the solver. The last limit is on the virtual memory used by the process (see the parameters in the trace).
    Every ten seconds, the runsolver process fetches the content of /proc/loadavg, /proc/pid/stat and /proc/pid/statm (see man proc) and prints it as raw data. This is only recorded in case we need to investigate the behaviour of a solver. The memory used by the solver (vsize) is also given every ten seconds.
    When the solver exits, runsolver prints some informations such as status and time. CPU usage is the ratio CPU Time/Real Time.
  5. LAUNCHER DATA
    These informations are related to the script which will launch the solver. The most important informations are the command line given to the solver, the md5sum of the different files and the dump of the /proc/cpuinfo and /proc/meminfo which provides some useful information on the computer.

Solver answer on this benchmark

Solver NameAnswerCPU timeWall clock time
iPAWS 2009-03-22SAT 0.039993 0.038655

General information on the benchmark

NameRANDOM/MEDIUM/3SAT/SATISFIABLE/560/
unif-k3-r4.25-v560-c2380-S786890012-057.cnf
MD5SUMa1a4d8d82b0d4daf47cfa00c0df86ca5
Bench CategoryRANDOM (random instances)
Best result obtained on this benchmarkSAT
Best CPU time to get the best result obtained on this benchmark0.020996
Satisfiable
(Un)Satisfiability was proved
Number of variables560
Number of clauses2380
Sum of the clauses size7140
Maximum clause length3
Minimum clause length3
Number of clauses of size 10
Number of clauses of size 20
Number of clauses of size 32380
Number of clauses of size 40
Number of clauses of size 50
Number of clauses of size over 50

Solver Data 

0.00/0.03	s SATISFIABLE
0.00/0.03	v 1 -2 -3 4 5 -6 7 -8 9 10 -11 -12 -13 14 -15 -16 -17 18 19 20 -21 22 23 24 25 26 -27 28 29 -30 -31 32 -33 -34 -35 36 -37 38 -39 40 -41 42 -43 -44 -45 46 47 48 49 50 51 52 53 54 55 -56 -57 -58 -59 60 61 62 -63 -64 -65 66 -67 68 69 -70 71 72 73 -74 -75 -76 -77 78 79 -80 -81 -82 83 84 85 -86 -87 88 89 90 -91 92 93 -94 -95 96 97 -98 -99 100 101 -102 103 104 105 -106 107 108 -109 -110 111 -112 113 -114 115 -116 117 -118 -119 -120 121 122 -123 124 125 126 -127 -128 -129 130 131 -132 -133 -134 -135 136 -137 138 -139 140 -141 142 143 -144 -145 146 -147 148 -149 150 -151 -152 -153 -154 -155 156 -157 158 159 160 -161 -162 -163 164 -165 -166 -167 168 169 -170 -171 -172 -173 -174 175 176 -177 178 179 180 -181 -182 183 -184 -185 -186 -187 -188 189 -190 -191 192 -193 -194 195 -196 197 -198 199 200 -201 -202 -203 -204 -205 -206 -207 208 -209 -210 211 212 -213 214 -215 -216 217 218 -219 -220 -221 -222 -223 -224 225 -226 -227 -228 -229 230 231 232 233 -234 235 -236 -237 -238 239 240 -241 242 -243 -244 -245 246 -247 -248 -249 250 251 -252 253 -254 -255 256 257 258 -259 -260 -261 262 -263 -264 265 -266 267 -268 269 -270 271 -272 -273 -274 275 276 -277 -278 -279 -280 -281 -282 283 -284 285 -286 -287 -288 -289 -290 -291 292 293 -294 295 296 -297 -298 299 -300 -301 302 303 304 305 -306 307 -308 309 310 311 312 -313 -314 -315 -316 -317 318 319 320 -321 -322 323 324 325 326 -327 -328 -329 330 331 -332 -333 -334 335 -336 337 338 -339 -340 -341 -342 -343 -344 345 -346 347 -348 349 -350 -351 -352 -353 354 355 356 -357 358 359 360 -361 362 -363 364 365 -366 -367 -368 -369 370 -371 -372 373 374 -375 376 -377 378 -379 -380 381 382 -383 -384 -385 386 -387 388 -389 -390 391 392 393 394 395 -396 397 398 399 -400 401 -402 -403 404 -405 -406 407 -408 -409 410 411 -412 413 414 415 416 417 -418 -419 420 -421 422 -423 -424 425 426 -427 428 -429 430 431 -432 -433 -434 435 -436 437 438 -439 -440 441 442 -443 -444 445 446 -447 -448 449 450 451 -452 -453 -454 455 -456 -457 -458 459 460 -461 462 -463 464 -465 466 467 468 469 -470 -471 472 -473 474 475 -476 477 -478 479 480 -481 482 -483 -484 -485 -486 -487 -488 489 -490 -491 492 493 494 -495 496 -497 -498 499 -500 -501 502 503 504 -505 506 -507 508 -509 -510 -511 -512 513 514 -515 -516 517 -518 -519 -520 521 522 -523 524 -525 526 -527 528 529 530 -531 -532 -533 534 -535 -536 537 538 -539 540 -541 -542 543 -544 545 546 -547 548 -549 -550 551 552 -553 554 -555 556 -557 -558 559 560 0
0.00/0.03	c input file instance-1522284-1238578146.cnf, flips 22002

Verifier Data 

OK

Watcher Data 

runsolver version 3.2.9 (svn:489) (c) roussel@cril.univ-artois.fr

command line: BIN/runsolver --timestamp -w /tmp/evaluation-result-1522284-1238578146/watcher-1522284-1238578146 -o /tmp/evaluation-result-1522284-1238578146/solver-1522284-1238578146 -C 1200 -W 1800 -M 1800 --output-limit 1,15 HOME/iPAWS HOME/instance-1522284-1238578146.cnf 185768818 

Enforcing CPUTime limit (soft limit, will send SIGTERM then SIGKILL): 1200 seconds
Enforcing CPUTime limit (hard limit, will send SIGXCPU): 1230 seconds
Enforcing wall clock limit (soft limit, will send SIGTERM then SIGKILL): 1800 seconds
Enforcing VSIZE limit (soft limit, will send SIGTERM then SIGKILL): 1843200 KiB
Enforcing VSIZE limit (hard limit, stack expansion will fail with SIGSEGV, brk() and mmap() will return ENOMEM): 1894400 KiB
Solver output will be limited to a maximum of 15728640 bytes. The first 1048576 bytes and the last 14680064 bytes will be preserved
Current StackSize limit: 10240 KiB


[startup+0 s]
/proc/loadavg: 1.83 1.82 1.44 2/70 8354
/proc/meminfo: memFree=1666336/2055920 swapFree=4173176/4192956
[pid=8354] ppid=8352 vsize=335916 CPUtime=0
/proc/8354/stat : 8354 (iPAWS) R 8352 8354 8125 0 -1 4194304 487 0 0 0 0 0 0 0 18 0 1 0 1130477894 343977984 471 1992294400 134512640 135114423 4294956208 18446744073709551615 134533972 0 0 4096 0 0 0 0 17 1 0 0
/proc/8354/statm: 83979 471 54 146 0 83831 0

Solver just ended. Dumping a history of the last processes samples

Child status: 0
Real time (s): 0.038655
CPU time (s): 0.039993
CPU user time (s): 0.034994
CPU system time (s): 0.004999
CPU usage (%): 103.461
Max. virtual memory (cumulated for all children) (KiB): 0

getrusage(RUSAGE_CHILDREN,...) data:
user time used= 0.034994
system time used= 0.004999
maximum resident set size= 0
integral shared memory size= 0
integral unshared data size= 0
integral unshared stack size= 0
page reclaims= 944
page faults= 0
swaps= 0
block input operations= 0
block output operations= 0
messages sent= 0
messages received= 0
signals received= 0
voluntary context switches= 2
involuntary context switches= 0

runsolver used 0.005999 second user time and 0.002999 second system time

The end

Launcher Data 

Begin job on node36 at 2009-04-01 11:29:06
IDJOB=1522284
IDBENCH=70679
IDSOLVER=516
FILE ID=node36/1522284-1238578146
PBS_JOBID= 9062198
Free space on /tmp= 66412 MiB

SOLVER NAME= iPAWS 2009-03-22
BENCH NAME= SAT09/RANDOM/MEDIUM/3SAT/SATISFIABLE/560/unif-k3-r4.25-v560-c2380-S786890012-057.cnf
COMMAND LINE= HOME/iPAWS BENCHNAME RANDOMSEED
RUNSOLVER COMMAND LINE= BIN/runsolver --timestamp -w /tmp/evaluation-result-1522284-1238578146/watcher-1522284-1238578146 -o /tmp/evaluation-result-1522284-1238578146/solver-1522284-1238578146 -C 1200 -W 1800 -M 1800 --output-limit 1,15  HOME/iPAWS HOME/instance-1522284-1238578146.cnf 185768818

TIME LIMIT= 1200 seconds
MEMORY LIMIT= 1800 MiB
MAX NB THREAD= 0

MD5SUM BENCH= a1a4d8d82b0d4daf47cfa00c0df86ca5
RANDOM SEED=185768818

node36.alineos.net Linux 2.6.9-22.EL.rootsmp #1 SMP Mon Oct 3 08:59:52 CEST 2005

/proc/cpuinfo:
processor	: 0
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.214
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5914.62
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:

processor	: 1
vendor_id	: GenuineIntel
cpu family	: 15
model		: 4
model name	:                   Intel(R) Xeon(TM) CPU 3.00GHz
stepping	: 3
cpu MHz		: 3000.214
cache size	: 2048 KB
fpu		: yes
fpu_exception	: yes
cpuid level	: 5
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm syscall nx lm pni monitor ds_cpl cid cx16 xtpr
bogomips	: 5586.94
clflush size	: 64
cache_alignment	: 128
address sizes	: 36 bits physical, 48 bits virtual
power management:


/proc/meminfo:
MemTotal:      2055920 kB
MemFree:       1666752 kB
Buffers:         79752 kB
Cached:         224852 kB
SwapCached:       9148 kB
Active:         189636 kB
Inactive:       125588 kB
HighTotal:           0 kB
HighFree:            0 kB
LowTotal:      2055920 kB
LowFree:       1666752 kB
SwapTotal:     4192956 kB
SwapFree:      4173176 kB
Dirty:             716 kB
Writeback:           0 kB
Mapped:          16312 kB
Slab:            59304 kB
Committed_AS:  3160028 kB
PageTables:       1876 kB
VmallocTotal: 536870911 kB
VmallocUsed:    264952 kB
VmallocChunk: 536605679 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB

Free space on /tmp at the end= 66412 MiB
End job on node36 at 2009-04-01 11:29:06